U.S. considering taking fight against Islamic State into Syria..Syria warns, no airstrikes on militants without permission

The United States is considering taking the fight against Islamic State militants into Syria after days of airstrikes against the group in Iraq and the beheading of an American journalist, the White House signaled on Friday.

President Barack Obama, soon to end a two-week working vacation on the Massachusetts island of Martha’s Vineyard, has not yet been presented with military options for attacking Islamic State targets beyond two important areas in Iraq, said White House deputy national security adviser Ben Rhodes.

But Rhodes made clear that going after Islamic State forces based in Syria is an option after the release of a video this week showing one of the group’s fighters beheading American journalist James Foley and threatening to kill a second American, Steve Sotloff.

“We will do what’s necessary to protect Americans and see that justice is done for what we saw with the barbaric killing of Jim…